Figures (4)

FTM operating principle. (a) The schematic diagram of the FTM system: the microlens grid creates the original focal grid at Zf. The sample on a filter-coated CMOS sensor is located at the Talbot length ZT away from the original focal grid. (b) As the plane wave is tilted by a small angle θ, the Talbot focal grid laterally shifts by Δ. (c) Scan and reconstruction method for the full-field image.